Final answer:
To calculate the number of lymphocytes, multiply the total leukocytes (7,742) by the percentage of lymphocytes (36%) converted to decimal (0.36) to get 2,787.12 lymphocytes. The correct answer is option B.
Step-by-step explanation:
The question asks us to calculate the number of lymphocytes present in a sample of 7,742 leukocytes, given that 36 percent of the leukocytes are lymphocytes. To find this number, we will use the following mathematical steps:
- Convert the percentage of lymphocytes to a decimal by dividing by 100: 36% / 100 = 0.36.
- Multiply the total number of leukocytes by this decimal to find the number of lymphocytes: 7,742 leukocytes × 0.36 = 2,787.12 lymphocytes.
Therefore, the number of lymphocytes present is 2,787.12.
The correct answer is B. 2,787.12 lymphocytes.